50:1 gas mix?

[ACN]

I have a 28ph Johnson Sea Horse, Model# RX-11, SN# 2335394. Is 50:1 the right mix?

 

[rolmops]

Re: 50:1 gas mix?

You have a 1963 engine there.<br />32:1 would be a good mix.I think that OMC started advising 50:1 for the engines of '64 and up.<br />There are however differences of opinion on the fuel mix so just wait a bit, you'll get some more reactions and just take the one that convinces you.<br />Just remember,that too much oil does not hurt an engine,too little will fry it.<br />Use 2 cycle oil for water cooled engines or outboards (tcw3)not the lawn mower type.<br />You need 2 Champion J4J,or J4C plugs and your gap is 0.030"<br />Good luck.

 

[Paul Moir]

Re: 50:1 gas mix?

There is a slight difference between the '63 engine (24:1 originally) and the '64 (50:1 originally). The drain valve assembly has larger screens. The drain valve assy. is a block held in by two screws by the nuts that hold the engine on. It is part of the oil recirculation system. <br />I'm not sure if this makes any difference. I suspect the only benifit of the enlargened screens is to prevent blockage. Mind you, my RX-10 ('62) had it's smaller screens completely blocked...